Combination band ob tube corrugating and flanging machine



April 10, 1928. I

, r c,. s. PRITCHARD COMBINA'ILiON BAND 0R TUBE CORBUGATING AND'FLANGING-MACHINE .Origihal Filed Nov. 6,11923 4 Sheets-Sheet 1 a I I 1 Re.16,93i r A ril 10, 1928-.

B. PRITCHARD COMBINATION BAND OR TUBE CORRUGATING AND FLANGING MACHINE 4 Sheets-Sheet 2 Original Filed Nov. 6, 1923 witness e5 Re. 1 6,93 l

\ A ril 10, 1928. j

C. B. PRITCHARD COMBINATION B AND OR TUBE CORRUGATING AND FLANGING MACHINE 4 Sheets-She'ei 3 Original Filed Nov. 6, 1923 1 PRITCHARD j COMBINATION BAND 'ORTIIIUBEV 'C'ORRUGA'TING AND FLAusiNe uacnmn,

, original. Filed Nov. 5 .1923 4- Sheets-Sheet 4 no wtc m M 40 1M Reissuecl Apr. 10, 1928 CARL B. PRITCHARD, OF SCOTTDAL'E, PENNSYLVANIA.

COMBINATION BAND R TUBE CORRUGATING AND FIiANGING MACHINE.

Original in. 1,507,424, dated This invention relates to-a combination corrugating and fianging machine whereby pre-formed tubes or hands may be first corrugated and thenfianged for providing the rims of bull wheels of well digging or pumping ri the primary object of the invention residing in the provision of such a means wherein one tube or band may be corrugated simultaneously with the fianging of a tube or An additional and important object of this invention is to .provide the combination corrugating and flanging machine for tubes or hands wherein pre-formed sheet metal tubes or bands of widely varying dimensions and especially the circumferential area thereof may be properly corrugated and then flanged for formingsaid bull wheel rim.

An additional object of the invention is to provide a machine of the above character wherein the same comprises a pair of driving rolls, one for the corrugating actionand the other for the Hanging action together with apair of cooperating forming rolls P whereby said forming rolls are slowly fed in a direction toward said driving rolls simultaneously with the rotation of said driving rolls and throngh the medium of a sin gle'powerunit. I

A still further object of the present invention is to providea means whereby said forming rolls may he quickly, returned to their primary inoperative'qiositions and this then again starting the operation of the mat-- chine.

1th the above and var ous ob ects 1n nature of the invention is better understood, the same comprises the novel form, combination, and arrangement of parts, hereinafter more fully described, shown in the accompanying drawings and claimed.

In the drawings, wherein like 'reference characters indicate corresponding parts throughout the different views:

Figure ,1 is a side elevational View of a combination tube or band corrugating or Hanging machine constructed in accordance with thisinvention.

Fig. 2iis a top plan view thereof, the-tubes or hands being corrugated and flanged rein cross section.

band that has been previously corrugated.

without the usualnecessity of stopping and view and others that will be apparent asthe' SPQ-(IlIIX'OIy and being fragmentaril-y shown September 2, 1924,'seria1 No. 673,102, filed November 6, 1923. Application mrissue filed May 8, 1925. Serial No. 28,979.

Fig. 3 is a rear elevational" view of the machine showing but one tube or band, and this in cross section, said tube or band being corrugated.

Fig. 4 is an enlarged fragmentary longitudinal sectional view, taken substantially' upon the line 4.4 of Fig. 2, for more clearly disclosing the form of drive mechanism betweena horizontal driven shaft at the rear ot' the machine and the screw shaft operatively connected to the carrier of the forming roll for the corrugating or fianging operation as the case may be, the relatively large worm gear carried'by the outer end of said screw shaft for inter-mesh with the cooperative worm gear carried by said driven shaft being removed. a

-Fig. 5 a view similar to Fi 4, and taken substantially upon' the line 55 of said Fig. 2 for disclosing the clutch mechanism and sprocket gear formation, said clutch mechanism adapted to be controlled for causing the rotation of said driven shaft 'in a forward or rearward direction as the case may be for controlling subsequently the slow forward movement of said'forming roll or the quick return movement, thereof.

Fig. 6 is an enlarged top plan view of a pair of adjustable flanged roller receiving elements employed in conjunction with the present machine, said pair of roller supports being so formed as to support the rollers at different elevations, said rollers adapted at their different elevations to in turnsupport the band or tube while it is undergoing its corrugating operation it being necessary in this instance that said pair of roller supporting elements be supported within a well or at a point beneath the level of the ma-v chine for purposes to he presently set .forth in the following detailed description.

Fig. 7 is an end elevational View of said pair of flanged roller supports.

Fig.8 is an enlarged elevational view, of one of the'screw feed shafts operatively connected to-said horizontally disposed driv'en shaft for controlling the slow forward move ment or quick returning movement of the forming rolls.

Fig. 9 is an enlarged detailed transverse sectional view, taken substantially upon the line 9-9 of Fig. 2, but showing in rear elevation one of the forming roll carriers as well as its guide means: j x

10 is an end elevational view of a stub shaft supporting standard forming an essential part of the present machine.

Fig. 11 is an enlarged perspective of one of the removable plates that form essential parts of the forming roll carrier. guides, and Fig. 12 is an elevational view of one of the plurality ofroller carrying shafts employed in conjunction with the present machine. I

Now having particular reference to the drawings, my improved combination tube corrugating and flanging machinecomprises among other elements a solid base 5 of relative T-shape as shown clearl in Fig. 2, said base bein flanged at 6 ent1rely around its edges an provided with openings 7, Fig. 1, wherein the same may be anchored to the floor or upon a concrete base or support, of a shape similar. to said machine base 5, and of a sufficient height, it being well to state at this time, that should said machine base be anchored to the work shop floor, it will be necessary to provide at opposite sides of the longitudinal portion of the machine base,

relatively deepwells or pits for allowing the tubes or ban 5 bein corrugated or flanged to extend therein and to be supported during their corrugating operation upon suitable adjustable rollers, which rollers are removably adjustably associated with supports of the t pe more clearly disclosed in Figs. 6 and 7 to he hereinafter more fully described. I

Adjacent the inner end of the longitudinal portion of said relatively T-shaped machine base 5, and suitably journalledadjacent its" opposite ends is a transversely extending shaft 8, the opposite ends of which extend beyond the sides of said longitudinal portion of the machine base, and to which are keyed corrugating and flanging driving rollers 9 and 10 respectively. At this time, it might be well to state that I do not wish to-- be limited to any specific form of corrugating or flanging driving rolls as in the uture practice of the invention, any desirable type thereof can be employed that is compatible.

with the purposes of the present invention,-

Keyed to said'transve'rse driving roll carrying shaft and intermediate the ends thereof is a relativel large spur car 11, that has mesh with a re atively smal ens ur gear 12 keyed to a transverse shaft 13 s ightly forwardly of said shaft 8 and suitably. journalled in spaced bearin 14. Alsoke ed to said last mentioned sha t 13 and space from said relatively small spur gear 12 is a relatively lar er spur gear 15'that is in turn in mesh with a small spur gear 16 upon the inner end of the armature shaft 17 of a high powered electric motor 18 that is suitably the gear elements 11, 1.2, 15 and 16, there will be a substantial reduction in speed between said shaft 17 of the motor 18 and the transverse drivin roll "carrying shaft 8.

Directly rearwardljy of the corrugating and flanging driving rolls 9 and 10 respectively, and upon the transverse portion of the before described machine base 5 are pairs of spaced for-min roll carrier guide bars designated genera ly 19 and longitudinally movable within the respective pairs of which are the corrugating and flanging roll carriers 20 and 21 respectively. "The pairs of guide bars 19 as well. as the formin roll carriers 20 and 21v are identical in al re spects excepttheir dimensions, the pair of" guide bars 19 within which is movable the flange forniin roll carrier 21 being relatively longer and spaced apart agreater distance than the pair of guide bars 19 for the corrugating roll carrier 20, it being of course understood that said flange forming -'roll carrier 21 is correspondingly longer and of greater width than the corrugating forming roll carrier 20.'

In Fig. 9 wherein there is illustrated in greater detail the spaced guides: 19 and carrier 21 complementary to the flange-forming roll, it will be noted that said guides19 are fhrmed integrally by casting or the like with the machine base 5, and that the same are formed at their 'inner longitudinal edges with channels 22 for providing runways for L-shaped runners 23 of the complementary roll forming carriers 20 and 21 as the case may be.

Detachably secured to the top sides of the guides 19 preferablythrough the medium of bolts 24 are retaining strips 25, the inner edges of which extend over the protrudingv edges ,of said L-shaped runners 23 for cOn'seuently preventing any vertical thrust of t 1e respective carrier, and also for allowing the same to be removed from the guides 19 for repair or renewal purposes after said plates 25'have been removed.

The L-shaped runners 23 of each of the forming roll carriers 20 and 21 are integrally connected adjacent their rear ends by a cross web 26, the front end of said runners 23 being formed with vertically extending coaxial shaft bearings 27 within which are rotatable the opposite ends of the flange forming roll carrying shaft 29 and corrugating forming roll carrying shaft 30 respectively. Loose upon the shaft 29 isthe flanged forming roll 31 that is of cast steel and terminates at its, opposite ends into flange forming driving roll 10 to form inwardly extending flanges a upon the opposite ends of the previously corrugated sheet metal band'or tube-b in a manner to be hereinafter more fully, described.

Loose upon the shaft 30 of'the before-described carrier 20 is a cast steel corrugating 1 necessarily complementary to the shape ofa corrugating driving roll 9, and cooperates.

with saiddriving roll 9 during the'operation of the machine to force certain portlons of the before-mentioned band or tube 5 into the grooves of the driving roll 9 as said forming roll 33 moves slowly in fldlIBCtlOIl there to for consequently forming corrugations in said band or tube as clearly shown in Figs. 2 and 3, and this in a manner also to be hereinafter more fully described- Upon the opposite projecting ends of the corrugating forming roll carrying shaft 30 are swingably disposed arms 34, the front ends of which are equipped with removable inwardly projecting guide rollers 35 that engage the opposite edges of the band or tube being corrugated, and this before the corrugating action has started, for consequently maintaining said band or tube in a position to assure the formation of the corrugations at a point ,directly intermediate the edges of said band or shoe.

The rear ends of theroller carrying arms 34 engage beneath outwardly extending lugs 36 formed upon opposite sides of the forming roll carrier 20, Fig. 1, .for limiting the downward swinging movement of said arms as will be obvious. p

J ournalled at its opposite ends in pairs of spaced and raised bearings 37 and 38 respectively and slightly beyond the rear end of the machine frame 5 is a cross shaft 39 that I plain portion 46 for rotation within a suitable bearing 47 Fig. 2.

is equipped adjacent its opposite ends at points within the said bearings with worms 40 and 41 respectively that have mesh with relatively large worm gears 42 and 43 upon the reduced ends 44 of forwardly extending feed screws 45, specifically shown in Fig. 8 Each of these feed screws 45 includes a I The threaded portions of said feed screws engage within threaded bnxings 48 carried by the connecting webs 26 of the respective forming roll carriers 20 and 21 for manifestly causing forward-or rearward sliding movement of said carriers when said cross shaft 39 is rotated in opposite directions.

As more clearly shown in the enlarged detail sectional View in Fig. 4, each of the worms 40 and 41 areloose upon said cross shaft 39 and each is formed with an inwardly-extending bearing sleeve 49 that engages through the innermost one of its respective pair of bearings as at 37 or 38, and terminates in a flange 50'formed'with suitable clutch teeth 51 forcooperation with a movableclutch element splined upon said shaft 39, the one complementary to the Worm 41 being designated 52 while the one compltlllQlllTal'y t0 the other'of said worms 40 being designated 53, it being manifest that when said shaft 39 is rotated, these clutch elements may be engaged or disenga ed with or from the clutch teeth upon the en s of the sleeve 49 of the respective worms 40' or 41 ton consequentlycausing the operation or inoperation as the case may he of the forming rolls 31 and 33.

' 'Loose upon the shaft 3.9 and at a'point slightly off center of said shaft is a pair of clutch collars designated respectively 54 and 55, Fig. 5, the clutch faces of said collars be ing opposed and adapted to be selectively secured to said shaft 39 by a double-ended complementary clutch element 56 splined to said shaft 39 intermediate the clutch collars 54 and 55. Each of these loosely mounted clutch collars 54 and is formed adjacent its inner end with a circular flange 54 and 55 respectively to the inner face ofeach of which is secured a sprocket gear ring 54" and 55 respectively.

Trained over the sprocket gear 55 is an endless sprocket chain 57 that extends forwardly and is in turn trained overa relatively larger sprocket gear 58, Fig. 1, keyed to the before mentioned transverse shaft 8, upon the opposite ends of which are mounted the driving rolls 9 and 10, it being of course obvious that when the movable clutch element 56 is engaged with the clutch collar 55 and after the clutch elements 52 and 53 have respectively connected the worms 40 and 41 to the shaft 39, the operation of the electric motor 18 will slowly rotate the shaft 39 for consequently slowly feeding the forming rolls 31 and 33 in a direction toward the driving rolls 9 and 10, which, after the un-, worked upon band or tube and onethat has been corrugated have been positioned over the-respective driving rolls 9 and 10 and properly supported in a manner to be here ,inafter more fully described, said slow feedsprocket gear upon the inner end of a stub shaft-62, which stub shaft is suitably journalled within the upper cndof a vertical post 63, Fig. 10. This post is preferably of the shape shown and is adapted to be secured at its lower end through the medium of bolts or other suitable fastening means to the'inachine base 5.

The other end of said shaft 62 is equipped witlra similar sprocket gearover which is trained a rearwardly and downwardly extending endless sprocket chain 64. This last mentioned sprocket chain 64 is in turn trained over the sprocket ring gear 54" of the clutch member 54 upon the before de-- scribed cross shaft 39, and in view of this gearing arrangement it will of course be obvious that by connecting the gear 60 to the foremost cross shaft 13 through the medium of a clutch element 59". that is splined upon said shaft and'adapted for cooperation with the clutch element 59 and a disconnection of the sprocket gear carrying clutch member 55 upon the rearmost cross shaft 39, and a consequent connection of the gear carrying clutch element 54 to said shaft 39 through eomplish this, it is necessary, as before set forth, to either provide pits or wells at opposite sides of the longitudinal portion of the machine base or to mount the machine a sufiicient height above the'fioor level. In either instance, it is necessary that a supporting and guide means be provided for the tubes or bands to rest upon while undergoing both their corrugating and flanging operations, these supporting and guide means maintaining the bands or tubes being worked upon in proper positions with respect to their driving rolls and for allowing the same to freely rotate when the same are forced into engagement with the driving rolls by the forming rolls due to the -frictional contact therebetween, said guiding and supporting means also preventing'the tubes from horizontally wobbling which would otherwise cause the corrugations or flanges to be improperly formed.

W'ith particular reference to Figs. 6 and 7 wherein there is detailed oneof said guiding and'supporting means, 65 designates a substantially rectangular shaped base plate that is flanged at. its opposite ends and provided with openings 66 whereby said base plate may be suitably anchored through the medium of bolts or the like to the bottom of its corresponding well or pit or to the machine shop floor. This base late is formed upon opposite edges wit upstanding flanges 67 between which and upon said base plate are adjustable a pair of plates 68, 6S. Said base plate 65 is formed centrally with a longitudinal undercut slot 69, within site ends with a pairof integrally joined shaft end rests 72 and 73 respectively, it being noted from a consideration of Figs. 1

and 7 that the rests of each pair are at different elevations and thatthe pairs of rests at opposite ends of said plates 68 are eoaxial with each other. For the purpose of strength, the integrally joined pairs of rests at-opposite ends of the plates 68, 68, are integrally joined together by a cross web 74.

For detachable selective positioning :at their opposite ends upon either the upper or lower co-axial rests of each plate 68 are cross shafts 75-75, Figs. land 12. Inwardly of theends of each of these shafts 7 5 are flanged rollers 76 upon which engage the opposite edges of the tubes orbands being corrugated or flanged, it being of course apparent that when tubes or bands of relatively great circumferential area are being worked upon, these shafts 7 575 will be positioned upon the lowermost rest, and that when tubes or bands of a lesser circumferential area. are

The tubes or bands in the original form, that 1s, before undergoing their corrugating 'operations'are in somewhat of an elliptic formation, and it is therefore necessary 1n order to obtain the proper corrugating effect to support said tubesfor bands from above as well as below, and for accomplishing this, there is provided upon the side of the machine frame adjacent the corrugating forming roll 9, a vertical post or standard 77, that is formed at its upper end and at opposite sides thereof with pairs of co-axial shaft end rests 78,-the rests of each pair beingfalso at different elevations and adapted for the selective reception of a cross shaft 79, that carries adjacent its oppositeends flanged rollers 80, upon which engage the opposite upper edges of the band or tube in Fig. '3;

In view of the fact that while undergoing their corrugating operations, the bands or tubes assume a true' circular shape, itis not necessary to provide a similar support at the pposite side of the machine for supporting the corrugating band or tube being flanged.

In view of the above, it will be at once apparent that the un-worked upon band or tube 6 may be positioned upon the corrugatmg side of the machine in a manner shown by the dotted lines in Fig. 1, it being -of course noted that this band or tube will contact with the driving wheel 9 at its front side and in view of the fact that the same is supported from above and below in such a manner as to firmly engage said driving wheel 9, this band or tube will be rotated after the forming roll 33 has been moved grooves of the driving wheel 9 for effectively 1.11110 engagement therewith, and upon its continued movement of this forming roll 33, toward this band, the ribs of the forming wheel will manifestly force certain portions of the band material into'the circumferential band is placed upon the driving roll 9 while the corrugated band or tube may be properly positioned upon the driving roll '10 for the flanging operation for consequently simultaneously corrugating and flanging a pair of tubes or bands at a single operation. It will of course be manifest thatafter the corrugated band or tube has been positioned upon the driving roll 10, the flanges 32 at opposite ends of the forming roll 31 will force the protruding edges of the band or'tube inwardly for consequently flanging the same, this flanging operation being produced by the slow movement of the forming wheel 31 toward its complementary driving wheel 10. In this connection it is noted that the structures of the rolls together with their. correlation with the means for moving the forming roll toward the driving roll co-act to bring the flanges 32 preliminarily into contact with the protruding edges of the blank and for subsequently assuring movement of the forming roll for forcing the. said edges radially inwards to. their final form. 1

It is necessary that the flanged formin roll 31 have a greater movement toward its complementary driving roll 10 than the corrugating forming roll 33 toward its compler mentary driving roll.9, and it will be necessary for the operator to disconnect the worm 41 from the shaft 39 through the medium of the movable clutch element 52 after the band or tube has been properly corrugated.

After the simultaneous corrugating and clutch elements are'so, controlled as to allow for the quick simultaneous return of both of the forming rolls.

It will thus be seen that I- have provided a highly useful and efficient machine forcorrugating and flanging tubes or bands and this especially while they are in their original cold state, and a machine that will perform said operations simultaneously,

and this through the medium ofbut a 'single power plant.

ters Patent is:

1. In a corrugating and flanging machine of the character described, a base, corrugat ing and flanging driving, rolls mounted for rotation upon said base, corrugating and flanging forming rolls also mounted upon said base and adapted for respective cooperation with said driving'rolls, means for actuating said driving rolls and simultaneously actuated means for controlling the slow movement 'of said forming-rolls in a direction toward said driving rolls, and means for stopping the movement of said forming rolls either jointly or singly. I

2. In a corrugating and flanging machine for sheet metal bands, a corrugating and a, flanging driving roll, means for rotating said driving rolls simultaneously, a pair of longitudinally movable forming 'rolls for respective cooperation with. said driving rolls, means. operable simultaneously with the operation of said driving rolls for moving said forming rolls in a direction to-- ward said driving rolls in a relatively slow manner, and.means for causing the quick return of either. or both of said forming I adapted for respective cooperation with said corrugating and flanging driving rolls, a power plant upon said base, and means operable by said power plant for causing the movement 0f said forming rolls in a direction towsn d or away from said driving rolls simultaneously with the "operation of said driving rolls. I

' 4:. In a corrugating and flanging machine 'flanging Operations, different movableof the character described, a base, corrugating and flangingdriving rolls mounted for rotation upon said base, cooperating forming'rolls longitudinally slidable upon said I I have herein shown and described, a comj i tly 01 singly also during the rotation of bination corrugating and flanging machine consisting of certain detailed structural elements it being. nevertheless understood that I do not wish tolimit' myself to said detailed structural elements, and in the future said drivingrolls.

. 5. In a corrugating and Hanging machine of the character described, a base, a corrugated drivingroll disposed for rotation upon said base and over which is to be engaged 6. In a tube corrugating machine, a base,

a corrugated driving roll mounted for rotation upon said base and around which'the tube to be corrugated moves, a hanger and a support for the tube being corrugated forwardly of said driving roll, a cooperating forming roll slidably movable in opposite directions upon .said base, means simultaneously with the operation of said driving roll for forcing said forming roll into engagement with said driving roll for corrugating said tube, said hanger and support being adjustable to tubes of varying circumferen- *tial areas.

7. Av machine for forming rims for bull wheels comprising a rotatably mounted driving roll. over which is adapted to be engaged a tubular blank of greater width than that of the, finished rim, a forming roll having peripheral flanges spaced apart a distance greater than the width of the finished rim,

-, said rolls being mounted for bodily movement relatively to each other during normal operation thereof a suflicient distance to provide an open pass between the'rolls, means for rotating the driving roll, and means for moving one of said rolls towards the remaining roll whereby to bringthessaid peripheral flanges preliminarily into cont'zict with the marginal edges of said tubular blank and for subsequently moving the roll for forcing the said edges radially inwards. c

8. A machine for forming rims for bull wheels comprising a rotatably mounted driving roll over which is adapted to be engaged a tubular blank of greater Width than the driving roll, a forming roll'having peripheral flanges at its opposite ends adapted to embrace the driving roll, said rolls being mounted for bodily movement relatively to each other during normal operation thereof a suflicient distance toprovide an open pass between therolls -for the reception of the blank, means for rotating the driving roll, and means for-moving one of saidrolls towards the remaining roll whereby to bring said peripheral flanges preliminarily into contact with the marginal edges of said tubularblank and for subsequently moving the 7 roll for effecting the bending of the said edges radially inwards.

9. A machine for forming rims for bull wheels comprising a rotatably mounted driv' the driving roll during normal operation thereof a snflicient distance to provide an open pass between the rolls for the reception of the blank, means for rotating the driving roll, and means for moving the forming roll towards and from the driving roll. movement of the forming roll towards the driving roll bringing the flanges thereof preliminarily into intimate contact with 'the marginal,-

edges of the blank and subsequently effecting the spinning of said edges radially inwards.

10. A machine for forming rims for bull wheels comprising a rotatably mounted dri v ing roll around which a tubular blank to be operated upon is adapted to move, a forming roll for coaction with said driving roll, said rolls being mounted for relative bodily movement with res ect to each other, means for moving one o saidrolls towards and from the remaining roll, and means independent of said rolls for maintaining said tubular blank in a substantially true circular form during treatment by the said rolls, said last named means including a hanger cooperating with the inner surface of the blank.

and a support coacting with the outer surface of the blank, said hanger being radially adjustable with respect to the axis of the blank operated upon.

CARL B. PRITCHARD. 

